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A.O. Smith
Water Heater
BFC 50
A.O. Smith BFC 50 User Manual
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This manual contains the following text styles/symbols for situations that may endanger
users/engineers, cause damage to equipment or need special attention:
Note
A note gives more information on a topic.
Caution
Obey the caution instructions to prevent damage of the water heater.
Warning
Obey the warning instructions to prevent danger of personal injury, and serious damage
to the water heater.
Document identification
Article number
Language
Version
0311704
EN
2.
4
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w
8
7
9
Table of Contents
Preface
3
Copyright
3
Trademarks
3
Warranty
3
Liability
3
Compliance
3
Regulations
4
Contact Information
5
About this Manual
7
Scope
7
Target Group
7
Notation Conventions
7
Document Identification
8
Table of Contents
9
User Part
13
Introduction
15
Safety
17
Interface
19
Operator Interface
19
Explanation of Icons
19
Control Switch
20
Buttons
20
PC Connection
20
Status of the Water Heater
21
Operating Modes
21
Error Conditions
22
Service Conditions
23
Anode Warning
23
Use
25
Turn on the Water Heater
25
The Appliance's Heating Cycle
25
Turn off the Water Heater
27
Turn off for a Short Period
27
Isolate from the Mains
28
Turn off for a Long Period
28
Main Menu
29
Notation Conventions for Menu-Related Instructions
29
Switching to on Mode
30
Setting the Water Temperature
30
Week Program
30
Starting and Stopping the Week Program
31
Changing the Appliance's Standard Week Program
31
Adding Times to a Week Program
34
Deleting Times from a Week Program
35
Extra Period
36
Settings
38
Installation, Maintenance and Service Part
41
Introduction
43
About the Water Heater
43
The Appliance's Heating Cycle
43
Working Principle
43
Operating Cycle
45
Safety
47
Safety Instructions
47
Instructions on the Water Heater
48
Safety Devices
49
Protection for the Water Heater
49
Safety of the Installation
50
Environmental Aspects
50
Recycling
50
Disposal
51
Installation
53
Packaging
53
Conditions
53
Ambient Conditions
53
Maximum Floor Load
53
Water Composition
54
Working Clearances
54
Installation Diagram
55
Water Connections
56
Unvented Water Connections
56
Vented Water Connections
57
Gas Connection
58
Venting System
58
C13/C33 Concentric Systems
60
C13/C33 Parallel Systems
62
C43/C53/C63 Systems
64
Electrical Connections
65
Preparation
65
Mains Power
66
Optional Electrical Connections
66
Commissioning
67
Filling
67
Procedure for Checking the Supply Pressure
68
Procedure for Checking the Gas Control Valve Pressure
70
CO 2 Adjustment
71
Switching Pressure Measurement
73
Turn on the Water Heater
74
Decommisioning
74
Turn off the Water Heater
74
Draining
74
Conversion of Gas Type
77
Settings
79
Operator Interface
79
Service Program
79
Hysteresis
79
Display the Error History
80
Display the Water Heater History
80
Display the Selected Water Heater
81
Switch the Pump on or off
81
Setting the Service Interval
81
Service Mode
82
Setting Legionella Prevention
83
Setting the Central Heating Configuration
83
Maintenance
85
Preparation
85
Water-Side Maintenance
86
Descale the Tank
86
Clean the Condensate Drain
87
Gas-Side Maintenance
87
Clean the Burner
87
Clean the Heat Exchanger
87
Finalization
88
Troubleshooting
89
Errors and Warnings
89
General Errors
90
Displayed Errors
91
Warnings
96
Appendices
97
Technical Details
97
Dimensions
101
Gas Details
105
Week Program Card
107
Electrical Wiring Diagram
109
Menu Structure
111
Declaration of Conformity
112
Warranty
113
Index
115
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A.O. Smith BFC 50 Specifications
General
Brand
A.O. Smith
Model
BFC 50
Category
Water Heater
Language
English
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